It's pretty glitchy, but a lot of fun to play! <Up> Higher gear <Down> Lower gear <Left> You would be able to figure out by yourself <Right> This too <Space> Accelerate <Green flag> Reset the game (if multyplayer doesn't work) Don't hit the opponent or the edge. Multyplayer doesn't work for new scratchers.
Multyplayer is also glitchy...
